ensure maintenance is carried out by a competent person (someone who has the necessary skills, knowledge and experience to carry out the work safely) 1  maintain plant and equipment regularly â use the manufacturerâs maintenance instructions as a guide, particularly if there are safety-critical features.
HDPE (High Density Polyethylene). 3/4 HDPE will cost about $45.00 for 100' ($0.45/ft), so depending on the amount required can be much cheaper than the previous options. HDPE is used by many municipalities as water supply lines, so it has been tried and tested in underground applications.
Sony has just announced the price of the new PSP Go at their E3 conference, the new PSP Go will cost 249 dollars in North America and Europe when it launches Oct. 1 2009. The redesign slides underneath to reveal the controls with the usual PSP buttons. Some key feature of the PSP Go: